Harry m



H. M. PFLAGER.

CAR MOTH TRUCK.

nPPLxcmon msn :UNE 27.1921.

Patented Mar. 14, 1922.

Inl/(nier ,mm3 influyer- UNITED STATES PATENT OFFICE.

HARRY M. PFLAGER. F ST. LOUIS, MISSORI, ASSIGNOR TO COMMONWEALTH STEEL COMPANY. OF ST. LOUIS. MISSOURI, A CORPORATION OF NEW JERSEY.

CAR MOTOR TRUCK.

Specification of Letters atent.

Patented Mar. 14. 1922.

To ffl! whom il' my rom-ern.'

Be it known ,that l. HARRY M. lFLAGEn, a eitizen' of the United States. refsidingl at St. Louis. Missouri. have invented a certain new and useful Improvement in Car Motor Trueks. of which the. following is a full, clean and exact deseription. Such as will enappertains to make and use the same, refereuee hein; r had to the accompanying drawings. forming part of this specification.

M v invention relates to railroad rolling stock and consista4 in an improved truck construction especially adapted for use on four wheel motor true s such as are commonly uaed on street ears.

The main o'hjeet of my invention is to permit the use of a :short wheel base on trueks of this type, and an additional object is to provide meansfor distributing the torque ot' a motor mounted on one or more axles ol' the truc-k to both of the truck transouis and eonsequently more evenljtr over the truek traine.

It isdesirahle in motor trueks to have them as flexihle as possible vertically. hut veri1 rigid horizontally` as there is a tendency in rounding eux-ves for one side frame to run ahead ot' the other. .\n additional oh'ieet ol` my invention is to provide transomej whirh art in the eapaeity oi' diagonal braves to stitt'eu the trur'k frame horizontallv and whit-h them-hy differ from the usualtruek eoustrurtion in whieh the transoxns l'orni a l'ettangular opening in whit-h the holster is loe-ated und which destroys any diagonal hrueiug efleet whit-h might otherwise he serured from tintransoms.

ln the aeeompanying drawings..which illustrate a selected emhodiment o my invention- Figure l is a top 'view ol a longitudinal half of a l'our wheel truek. t

Figure :V is in part a longitudinal vertieal renti-al seetion through the truck and in part a ide elevation of saine.

Figure fl ie a vertieai transverse central sertion.

rl`he trurh is provided with the usual wheels l. axles f2. journal boxes il. equalizers 4. and wheel piece.k or side frames 5. driving motor t3 mounted. on one oi' the axle 2 and a holster T ie positioned entrally of the truek. extend,- lletweefi wheel pieces 5, and is carried oy springs t?. Tran soms 9 and l() extend from wheel p1eees .1 at eaeh side of holster 't' and preferahl)v integrally connect the opposite wheel pieces to each other.

If transom 1U extended directly from the Wheel piece on one side of the truck to the Wheel piece on the other side o'r the truek. as is the usual practice. the axle 2 which mounts motor 6 would have to he spaeed far enough away from the transom to avoid interference of the motor therewith.

To enable the motor to he lot-ated Closer to the center ot' the trut-k than is pofnille under present, practice. l forni transom l() :o that it entendel from each wheel pieve 5 downwardly and toward holster T. the iniddle portion of the transom passing under the middle portion of the holater, 'l`hi enahlee the motor to he mounted practically as close to holster T a5 would he the ease if there were no transom present.

lil'hile thi# ad vantage may he obtained h5' tzonstrueting transom lll onliY a deeerihed. l prete-r to eonstrurt the trauaoni .l Similarly and to unite the middle portions of these transom@ heneath the holster. This enablerl me ti; east the traue-oms integrally with eaeh other whether integral with the side frames or not` thereby produeing a more rigid truek frame aud alao enables me to distribute the torque from uiotor tl. the nose of which is Supported upon the middle portion ot transom 1t), equalliY to both transoms and from the latter to the wheel piet-es `on opposite sides of holster T.

am aware that the partieulur arrangement ot' parts may he varied. without departing from the spirit ot' my invention. and l eonteuiplate those nioditieutions. in adapting my invention to variou.` types of ears. which fall within the scope oli the following claims.

l elaim:

l. In a ear trut-k` spared transome. and a holster. the ende ol' whit-h are located he tween said transoms and at the level of the latter. and the intermediate portion of whieh orerlies said tramonta.

"l, In a car trut-li. spaced traneoms. and a holster. the ends of Tvhieh are located between the ende of Said transoms and at the level of the latter. and the intermediate portion of whirh overlie the intermediate portions of said tramonti.,

3. ln a ear trnek. o transom. and a bolster, 

